Fix issue 368 current timestamp function

src/PHPSQLParser/utils/PHPSQLParserConstants.php

@@ -129,7 +129,7 @@ class PHPSQLParserConstants {
                                  'BITLENGTH', 'CAST', 'CEILING', 'CHAR', 'CHAR_LENGTH', 'CHARACTER_LENGTH', 'CHARSET',
                                  'COALESCE', 'COERCIBILITY', 'COLLATION', 'COMPRESS', 'CONCAT', 'CONCAT_WS',
                                  'CONNECTION_ID', 'CONV', 'CONVERT', 'CONVERT_TZ', 'COS', 'COT', 'COUNT', 'CRC32',
-                                 'CURDATE', 'CURRENT_USER', 'CURRVAL', 'CURTIME', 'DATABASE', 'SCHEMA', 'DATE_ADD', 'DATE_DIFF',
+                                 'CURDATE', 'CURRENT_TIMESTAMP', 'CURRENT_USER', 'CURRVAL', 'CURTIME', 'DATABASE', 'SCHEMA', 'DATE_ADD', 'DATE_DIFF',
                                  'DATE_FORMAT', 'DATE_SUB', 'DAY', 'DAYNAME', 'DAYOFMONTH', 'DAYOFWEEK', 'DAYOFYEAR',
                                  'DECODE', 'DEFAULT', 'DEGREES', 'DES_DECRYPT', 'DES_ENCRYPT', 'ELT', 'ENCODE',
                                  'ENCRYPT', 'EXP', 'EXPORT_SET', 'EXTRACT', 'FIELD', 'FIND_IN_SET', 'FLOOR', 'FORMAT',

tests/cases/creator/issue368Test.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * issue368.php
+ *
+ * Test case for PHPSQLCreator.
+ */
+
+namespace PHPSQLParser\Test\Creator;
+
+use PHPSQLParser\PHPSQLParser;
+use PHPSQLParser\PHPSQLCreator;
+
+class Issue368Test extends \PHPUnit\Framework\TestCase
+{
+    /*
+     * https://github.com/greenlion/PHP-SQL-Parser/issues/368
+     * CURRENT_TIMESTAMP is detected as a reserved word an generate errors when used in JOIN clause
+     */
+    public function testIssue368()
+    {
+        $sql = "SELECT foo FROM barTable LEFT JOIN bazTable ON barTable.a = bazTable.a AND bazTable.d <= CURRENT_TIMESTAMP"; // KO
+
+        $parser = new PHPSQLParser();
+        $creator = new PHPSQLCreator();
+
+        $parser->parse($sql);
+
+        $this->assertEquals($sql, $creator->create($parser->parsed));
+    }
+}

tests/cases/parser/issue320Test.php

@@ -39,9 +39,8 @@
  */
 namespace PHPSQLParser\Test\Parser;
 use PHPSQLParser\PHPSQLParser;
-use PHPSQLParser\PHPSQLCreator;
 
-class issue320Test extends \PHPUnit_Framework_TestCase
+class issue320Test extends \PHPUnit\Framework\TestCase
 {
     public function test_no_warning_is_issued_when_help_table_is_used()
     {

tests/cases/parser/issue335Test.php

@@ -39,7 +39,7 @@
 
 use PHPSQLParser\PHPSQLParser;
 
-class issue335Test extends \PHPUnit_Framework_TestCase
+class issue335Test extends \PHPUnit\Framework\TestCase
 {
     /**
      * @test